CN113659933B - Signal output circuit with anti-interference mechanism and method - Google Patents
Signal output circuit with anti-interference mechanism and method Download PDFInfo
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- CN113659933B CN113659933B CN202010396281.2A CN202010396281A CN113659933B CN 113659933 B CN113659933 B CN 113659933B CN 202010396281 A CN202010396281 A CN 202010396281A CN 113659933 B CN113659933 B CN 113659933B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims abstract description 42
- 230000009466 transformation Effects 0.000 claims abstract description 31
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 10
- 230000001629 suppression Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention comprises a signal output circuit with an anti-interference mechanism and a method thereof. The amplifier is electrically coupled to the power supply and the ground terminal through the first and second amplifier bonding wires, respectively, and generates an amplified output signal according to the power supply operation. The transformation circuit comprises a transformer for performing impedance transformation according to the amplified output signal to generate a transformed output signal and a stabilizing capacitor for performing second harmonic suppression on the amplifier. The power supply end anti-interference circuit comprises: and the power end bonding wire and the power end anti-interference capacitor. The power terminal bonding wire is electrically coupled to the ground terminal. The power supply end anti-interference capacitor is electrically coupled between the power supply end bonding wire and the first amplifier bonding wire to cooperate with the power supply end bonding wire to filter out a basic harmonic coupling signal of a transformation output signal generated by the transformation circuit and coupled to the first amplifier bonding wire.
Description
Technical Field
The present invention relates to signal output technologies, and in particular, to a signal output circuit and method with an anti-interference mechanism.
Background
In a chip, a signal output circuit including an amplifier and a transformer is often required to amplify and output a signal after impedance matching. However, when packaging the chip, the power supply and the signal output lines are often on the same side or close to each other due to configuration considerations. The signal on the signal output path of the amplifier may generate noise via coupling of the bond wires, directly interfering with the power supply.
Further, the noise is transmitted to the ground terminal of the amplifier through the voltage feed-in point voltage stabilizing capacitor of the transformer via the shared power line to mix out additional second harmonic, which increases the interference to the signal output circuit.
Disclosure of Invention
In view of the foregoing, it is an objective of the present invention to provide a signal output circuit and method with anti-interference mechanism, so as to improve the prior art.
An objective of the present invention is to provide a signal output circuit and method with an anti-interference mechanism, which directly filters out a coupling signal with a fundamental harmonic by using an anti-interference circuit with a smaller circuit area, thereby greatly improving the anti-interference efficiency.
The invention includes a signal output circuit with anti-interference mechanism, one embodiment of which includes: an amplifier, a transformation circuit and a power supply end anti-interference circuit. The amplifier is electrically coupled to the power supply through a first amplifier bonding wire (bond) and to the ground through a second amplifier bonding wire, and is configured to operate according to the power supply and generate an amplified output signal. The transformation circuit includes a transformer configured to perform impedance transformation according to the amplified output signal to generate a transformed output signal, and a stabilizing capacitor configured to perform second harmonic suppression on the amplifier. The power supply end anti-interference circuit comprises: and the power end bonding wire and the power end anti-interference capacitor. The power terminal bonding wire is configured to be electrically coupled to the ground terminal. The power supply end anti-interference capacitor is configured to be electrically coupled between the power supply end bonding wire and the first amplifier bonding wire and to cooperate with the power supply end bonding wire to filter out a basic harmonic coupling signal of a transformation output signal generated by the transformation circuit, which is coupled to the first amplifier bonding wire.
The invention also includes a signal output method with anti-interference mechanism, which is applied to the signal output circuit, and one embodiment of the invention comprises the following steps: the amplifier is operated according to the power supply and generates an amplified output signal, wherein the amplifier is electrically coupled to the power supply through a first amplifier bonding wire and is electrically coupled to the ground through a second amplifier bonding wire; the transformer included in the transformation circuit is subjected to impedance conversion according to the amplified output signal to generate a transformation output signal, and the voltage stabilizing capacitor of the transformation circuit is used for carrying out second harmonic suppression on the amplifier; and the power end bonding wire and the power end anti-interference capacitor are operated together to filter out a basic harmonic coupling signal of the transformation output signal generated by the transformation circuit and coupled to the first amplifier bonding wire, wherein the coupling signal has a basic harmonic, the power end bonding wire is electrically coupled to the grounding end, and the power end anti-interference capacitor is electrically coupled between the power end bonding wire and the first amplifier bonding wire.
The features, operations and effects of the present invention will be described in detail with reference to preferred embodiments of the invention as follows.
Drawings
FIG. 1 is a circuit diagram of a signal output circuit with anti-jamming mechanism according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a signal output circuit with anti-interference mechanism according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a signal output circuit with anti-jamming mechanism according to an embodiment of the present invention; and
fig. 4 is a flowchart of a signal output method with an anti-interference mechanism according to an embodiment of the invention.
Detailed Description
An objective of the present invention is to provide a signal output circuit with an anti-interference mechanism and a method thereof, which directly filter out a coupling signal with a fundamental harmonic by using an anti-interference circuit with a smaller circuit area, thereby greatly improving the anti-interference efficiency.
Please refer to fig. 1. Fig. 1 is a circuit diagram of a signal output circuit 100 with anti-interference mechanism according to an embodiment of the present invention. The signal output circuit 100 is in one embodiment disposed in a chip (not shown) within 1 package structure 190. In fig. 1, the division is made by a broken line a, one side of the broken line a having the signal output circuit 100 is the inside of the package structure 190, and the other side of the broken line a is the outside of the package structure 190.
The signal output circuit 100 includes: an amplifier 110, a transformer 120 and a power supply anti-interference circuit 130.
The amplifier 110 is electrically coupled to the power supply VDD through a first amplifier bonding wire (bond) 115A and to the ground GND through a second amplifier bonding wire 115B, respectively. The first amplifier bonding wire 115A and the second amplifier bonding wire 115B are connected across the inner and outer sides of the package structure 190, so that the amplifier 110 is electrically coupled to the power supply VDD and the ground GND outside the package structure 190.
The amplifier 110 is configured to operate according to the power supply VDD and generate an amplified output signal AOUT. IN one embodiment, the amplifier 110 is electrically coupled to an input circuit 180 to receive an input signal IN from the input circuit 180, and amplify the input signal IN to generate an amplified output signal AOUT.
The transformer circuit 120 includes a transformer VTF and a stabilizing capacitor C. The transformer VTF is configured to perform impedance conversion according to the amplified output signal AOUT to generate a transformed output signal VOUT, and the stabilizing capacitor C is configured to perform second harmonic suppression on the amplifier 110. In one embodiment, a transformer VTF includes: input terminals vi+ and Vi-, output signal terminals vo+ and output ground terminals Vo-.
Inputs vi+ and Vi-are configured to receive the amplified output signal AOUT of amplifier 110. The output signal terminal vo+ is configured to be electrically coupled to the output PAD through the first voltage transformation circuit bonding wire 125A, so as to output the voltage transformation output signal VOUT to the output PAD through the first voltage transformation circuit bonding wire 125A. The output ground Vo-is configured to be electrically coupled to the ground GND through the second transforming circuit bonding wire 125B.
The first transformer bonding wire 125A and the second transformer bonding wire 125B are connected across the inner and outer sides of the package structure 190, so that the transformer VTF is electrically coupled to the output PAD and the ground GND outside the package structure 190.
When the first amplifier bonding wire 115A and the first transformation circuit bonding wire 125A are disposed at a relatively close distance, the transformation output signal VOUT generated by the transformer VTF is easily coupled to the fundamental harmonic coupling signal FS generated on the first amplifier bonding wire 115A through the first transformation circuit bonding wire 125A. The fundamental coupling signal FS has a fundamental harmonic (fundamental) and interferes with the power supply signal received by the first amplifier bond wire 115A from the supply power supply VDD. Therefore, the power supply side anti-interference circuit 130 provides an anti-interference mechanism to avoid the influence of the fundamental harmonic coupling signal FS.
The power supply anti-interference circuit 130 includes: a power terminal bond wire 140 and a power terminal anti-tamper capacitor 150.
The power terminal bonding wire 140 is configured to be electrically coupled to the ground GND. The power supply anti-interference capacitor 150 is configured to be electrically coupled between the power supply bonding wire 140 and the first amplifier bonding wire 115A. The power-supply-end bonding wire 140 is connected across the inner and outer sides of the package structure 190, so that the power-supply-end anti-interference capacitor 150 is electrically coupled to the ground GND outside the package structure 190.
In one embodiment, the power supply terminal bond wire 140 operates as an inductor. Therefore, the power bond wire 140 and the power anti-interference capacitor 150 operate together as a Self-resonant circuit to filter out the fundamental harmonic coupling signal FS, thereby avoiding interference with the power signal received by the first amplifier bond wire 115A from the power supply VDD. In one embodiment, the inductance value of the power-side bonding wire 140 is L, the capacitance value of the power-side anti-interference capacitor 150 is C, and the inductance resonance frequency f of the power-side bonding wire 140 and the power-side anti-interference capacitor 150 0 Can be expressed as:
f 0 ＝1/(2π×sqrt(L×C))
in one embodiment, the resonant frequency f of the power bond wire 140 and the anti-interference capacitor 150 0 Corresponding to the frequency of the fundamental coupling signal FS, to effectively filter the fundamental coupling signal FS.
Please refer to fig. 2. Fig. 2 is a circuit diagram of a signal output circuit 200 with anti-interference mechanism according to an embodiment of the present invention. Similar to the signal output circuit 100 of fig. 1, the signal output circuit 200 of fig. 2 includes: an amplifier 110, a transformer 120 and a power supply anti-interference circuit 130. The structure and connection relationship of the amplifier 110 and the transformer circuit 120 in fig. 2 are the same as those in fig. 1, and thus the description thereof is omitted.
In this embodiment, the power supply anti-interference circuit 130 includes a power supply anti-interference inductor 210 in addition to the power supply bonding wire 140 and the power supply anti-interference capacitor 150. The power-side anti-interference inductor 210, the power-side bonding wire 140 and the power-side anti-interference capacitor 150 together operate as a capacitive circuit to increase the flexibility of circuit design.
In addition, in an embodiment, the capacitive resonance frequency of the capacitive circuit including the power-side bonding wire 140, the power-side anti-interference capacitor 150 and the power-side anti-interference inductor 210 may be equal to the frequency of the fundamental harmonic coupling signal FS under the selection of appropriate inductance and capacitance values, so as to effectively filter the fundamental harmonic coupling signal FS.
Please refer to fig. 3. Fig. 3 is a circuit diagram of a signal output circuit 300 with anti-interference mechanism according to an embodiment of the present invention. Similar to the signal output circuit 100 of fig. 1, the signal output circuit 300 of fig. 3 includes: an amplifier 110, a transformer 120 and a power supply anti-interference circuit 130. The structure and connection relationship of the amplifier 110, the transformer 120, and the power anti-interference circuit 130 in fig. 3 are the same as those in fig. 1, and thus are not described again.
In this embodiment, the signal output circuit 300 further includes a ground anti-interference circuit 310. The ground anti-interference circuit 310 includes a ground bonding wire 320 and a ground anti-interference capacitor 330.
The ground bonding wire 320 is configured to be electrically coupled to the ground GND. The ground anti-interference capacitor 330 is configured to be electrically coupled between the ground bond wire 320 and the second amplifier bond wire 115B. The ground bonding wire 320 is connected across the inner and outer sides of the package structure 190, so that the ground anti-interference capacitor 330 is electrically coupled to the ground GND outside the package structure 190.
Thus, the ground side anti-interference circuit 310 may generally form a capacitive sensing circuit, such as the power side anti-interference circuit 130, filtering out signals generated by the transformer circuit 120 coupled on the second amplifier bond wire 115B, such as, but not limited to, signals having fundamental and second harmonics. In addition, the ground anti-interference circuit 310 may be provided with an additional ground anti-interference inductor (not shown) as in the embodiment of fig. 2, so as to form a capacitive circuit together with the ground bonding wire 320 and the second amplifier bonding wire 115B to achieve the anti-interference purpose.
In some technologies, a signal output circuit including an amplifier and a transformer circuit cannot effectively filter signals at a position or a filtering frequency of a filter circuit, which often results in generation of second harmonic and may affect amplification efficiency of the amplifier.
The signal output circuit directly filters the basic harmonic coupling signal, so that the anti-interference efficiency can be greatly improved, and other second harmonic waves caused by the fact that the basic harmonic coupling signal enters the input circuit at the front end through the power line can be avoided. In addition, the bonding wire and the capacitor are directly used to form the capacitive circuit, so that the anti-interference purpose can be achieved with a smaller circuit area.
Please refer to fig. 4. Fig. 4 is a flowchart of a signal output method 400 with anti-interference mechanism according to an embodiment of the present invention.
In addition to the foregoing apparatus, the present invention also discloses a signal output method 400 with an anti-interference mechanism, which is applied to, for example, but not limited to, the signal output circuit 100 of fig. 1. An embodiment of a signal output method 400 is shown in fig. 4, comprising the following steps:
s410: the amplifier 110 is operated according to the power supply VDD and generates an amplified output signal AOUT. The amplifier 110 is electrically coupled to the power supply VDD through a first amplifier bonding wire 115A and to the ground GND through a second amplifier bonding wire 115B, respectively.
S420: the transformer VTF included in the transformer circuit 120 performs impedance conversion according to the amplified output signal AOUT to generate a transformed output signal VOUT, and the stabilizing capacitor C of the transformer circuit 120 performs second harmonic suppression on the amplifier 110.
S430: the power supply bond wire 140 and the power supply anti-interference capacitor 150 included in the power supply anti-interference circuit 130 cooperate to filter out the fundamental harmonic coupling signal FS of the transformer output signal VOUT generated by the transformer 120 coupled to the first amplifier bond wire 115A. The power supply bonding wire 140 is electrically coupled to the ground GND, and the power supply anti-interference capacitor 150 is electrically coupled between the power supply bonding wire 140 and the first amplifier bonding wire 115A.
It should be noted that the above embodiment is only an example. In other embodiments, those of ordinary skill in the art will appreciate that modifications may be made without departing from the spirit of the invention.
In summary, the signal output circuit with the anti-interference mechanism and the method thereof directly filter the fundamental harmonic coupling signal by the anti-interference circuit with smaller circuit area, thereby greatly improving the anti-interference efficiency.
Although the embodiments of the present invention have been described above, the present invention is not limited thereto, and those skilled in the art can make various changes to the technical features of the present invention according to the explicit or implicit disclosure of the present invention, and all such changes may be made within the scope of the present invention, that is, the scope of the present invention should be defined by the claims of the present invention.
[ symbolic description ]
100 signal output circuit
110 amplifier
115A first amplifier bond wire
115B second amplifier bond wire
120-transformation circuit
125A first transformation circuit bonding wire
125B second transformation circuit bonding wire
130 power supply end anti-interference circuit
140 Power supply terminal bonding wire
150 power supply end anti-interference capacitor
190 packaging structure
180 input circuit
200 signal output circuit
210 power supply end anti-interference inductance
300 signal output circuit
310 anti-interference circuit for grounding terminal
320 ground terminal bond wire
330 anti-interference capacitor of grounding end
400 signal output method
S410-S430 steps
A is a dotted line
AOUT amplifying the output signal
C, voltage stabilizing capacitor
FS: fundamental harmonic coupled signal
GND ground terminal
IN: input signal
PAD output PAD
VDD, power supply
Vi+, vi-: input terminal
Vo +: output signal terminal
Vo-: output ground
VOUT: variable voltage output signal
VTF, transformer.
Claims (10)
1. A signal output circuit with an anti-jamming mechanism, the signal output circuit comprising:
the amplifier is electrically coupled to a power supply through a first amplifier bonding wire and a ground end through a second amplifier bonding wire respectively, and is configured to operate according to the power supply and generate an amplified output signal;
a transformer circuit including a transformer configured to perform impedance transformation according to the amplified output signal to generate a transformed output signal and a voltage stabilizing capacitor configured to perform second harmonic suppression on the amplifier; and
a power supply side anti-interference circuit comprising:
a power terminal bonding wire configured to be electrically coupled to the ground terminal; and
and the power supply end anti-interference capacitor is configured to be electrically coupled between the power supply end bonding wire and the first amplifier bonding wire and to work together with the power supply end bonding wire so as to filter a basic harmonic coupling signal of a transformation output signal generated by the transformation circuit and coupled to the first amplifier bonding wire.
2. The signal output circuit of claim 1 wherein the power supply bond wire operates as an inductor to operate as a capacitive circuit in conjunction with the power supply anti-tamper capacitor.
3. The signal output circuit of claim 1 wherein the power supply anti-tamper circuit further comprises a power supply anti-tamper inductor and operates as a capacitive circuit in conjunction with the power supply bond wire and the power supply anti-tamper capacitor.
4. The signal output circuit according to claim 1, wherein the power supply side anti-interference circuit has a inductance resonance frequency, and the inductance resonance frequency corresponds to the frequency of the fundamental harmonic.
5. The signal output circuit of claim 1, further comprising a ground anti-tamper circuit, the ground anti-tamper circuit comprising:
a ground bond wire configured to electrically couple to the ground; and
and the grounding end anti-interference capacitor is configured to be electrically coupled between the grounding end bonding wire and the second amplifier bonding wire.
6. The signal output circuit of claim 5 wherein the ground anti-tamper circuit further comprises a ground anti-tamper inductor and operates as a capacitive circuit in conjunction with the ground bond wire and the ground anti-tamper capacitor.
7. The signal output circuit of claim 1, wherein the transformer comprises:
a pair of inputs configured to receive the amplified output signal of the amplifier; and
an output signal terminal configured to be electrically coupled to an output pad through a first transformer circuit bonding wire, so as to output the transformed output signal to the output pad through the first transformer circuit bonding wire;
the output grounding end is configured to be electrically coupled to the grounding end through a second voltage transformation circuit bonding wire.
8. The signal output circuit of claim 1 wherein the amplifier receives an input signal from an input circuit to amplify the input signal to produce the amplified output signal.
9. A signal output method with anti-interference mechanism is applied to a signal output circuit, and the signal output method comprises the following steps:
the amplifier is electrically coupled to the power supply through a first amplifier bonding wire and electrically coupled to a ground through a second amplifier bonding wire;
a transformer included in a transformation circuit is made to perform impedance conversion according to the amplified output signal to generate a transformation output signal, and a voltage stabilizing capacitor of the transformation circuit is made to perform second harmonic suppression on the amplifier; and
a power end bonding wire and a power end anti-interference capacitor are jointly operated to filter a basic harmonic coupling signal of a transformation output signal generated by the transformation circuit and coupled to the first amplifier bonding wire, wherein the power end bonding wire is electrically coupled to the grounding end, and the power end anti-interference capacitor is electrically coupled between the power end bonding wire and the first amplifier bonding wire.
10. The signal output method according to claim 9, further comprising:
the grounding end bonding wire is electrically coupled to the grounding end, and the grounding end anti-interference capacitor is electrically coupled between the grounding end bonding wire and the second amplifier bonding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010396281.2A CN113659933B (en) | 2020-05-12 | 2020-05-12 | Signal output circuit with anti-interference mechanism and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010396281.2A CN113659933B (en) | 2020-05-12 | 2020-05-12 | Signal output circuit with anti-interference mechanism and method |
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| Publication Number | Publication Date |
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| CN113659933A CN113659933A (en) | 2021-11-16 |
| CN113659933B true CN113659933B (en) | 2024-04-02 |
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| CN202010396281.2A Active CN113659933B (en) | 2020-05-12 | 2020-05-12 | Signal output circuit with anti-interference mechanism and method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2933907A1 (en) * | 2014-04-16 | 2015-10-21 | Dialog Semiconductor GmbH | Drive scheme for weakly coupled coils |
| CN106656076A (en) * | 2016-12-31 | 2017-05-10 | 唯捷创芯(天津)电子技术股份有限公司 | Radio frequency power amplifier supporting multi-mode and multi-frequency, chip and communication terminal |
| US10003374B1 (en) * | 2017-11-29 | 2018-06-19 | National Cheng Kung University | Wireless radio frequency transceiver system for internet of things |
| CN110504923A (en) * | 2018-05-18 | 2019-11-26 | 恩智浦美国有限公司 | Transistor unit and amplifier with harmonic termination circuit and its manufacturing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5608612B2 (en) * | 2011-07-12 | 2014-10-15 | 株式会社日立製作所 | Transimpedance amplifier, semiconductor device, and optical communication module |
-
2020
- 2020-05-12 CN CN202010396281.2A patent/CN113659933B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2933907A1 (en) * | 2014-04-16 | 2015-10-21 | Dialog Semiconductor GmbH | Drive scheme for weakly coupled coils |
| CN106656076A (en) * | 2016-12-31 | 2017-05-10 | 唯捷创芯(天津)电子技术股份有限公司 | Radio frequency power amplifier supporting multi-mode and multi-frequency, chip and communication terminal |
| US10003374B1 (en) * | 2017-11-29 | 2018-06-19 | National Cheng Kung University | Wireless radio frequency transceiver system for internet of things |
| CN110504923A (en) * | 2018-05-18 | 2019-11-26 | 恩智浦美国有限公司 | Transistor unit and amplifier with harmonic termination circuit and its manufacturing method |
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| CN113659933A (en) | 2021-11-16 |
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